1
IAT (IISER) 2025
MCQ (Single Correct Answer)
+4
-1
Which one of the following statements is correct?
A

Red muscle fibres produce ATP aerobically under normal oxygen conditions.

B

Mitochondria are more in white than in red muscle fibres.

Lactic acid accumulates more in red than in white muscle fibres under similar

C

conditions.

D

All muscle fibres primarily produce ATP anaerobically.

2
IAT (IISER) 2024
MCQ (Single Correct Answer)
+4
-1

Which of the following proteins plays a direct role in muscle contraction?

A
Trypsin
B
Insulin
C
Myoglobin
D
Troponin
3
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1
Troponin controls binding of actin to myosin motor, thereby regulating muscle contraction. Binding of which metal ions to troponin is crucial for this purpose?
A
$N a$
B
$K$
C
$M g$
D
Ca

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